Plus, in the late 60s, Chevy didn’t use engines over 400ci in midsize cars this meant COPOs were far and away the fastest Chevelles and Camaros on the road. From day one they were, and still are, offensively expensive.
A big block has higher weight and density in the block, as well as larger valve bores, a longer stroke, and a generally larger exterior size. A big block can have the same displacement as a small block, but only the most extreme small blocks encroach on this territory.
While these aren’t necessarily Jeep mods, they should be checked and double checked when you’re putting in work. No matter how careful of a driver you are, there are likely going to be times when you get yourself into a bind. Even if it never happens to you, others who you come across or go adventuring with may need help.
Across North American, used minivans have become a ubiquitous tool for busy parents, small delivery companies, and school systems. We say used minivans because of the rising cost of buying a new vehicle of any kind. Because of their utility and generally well appointed interiors, the minivan class seems to be increasing in cost faster than many other car groups. That leaves savvy buyers looking for used minivans in larger numbers.
It has 113-cc intake ports, 2.25-inch intake valves and 1.88-inch exhaust valves, a massive 1150cfm carb (yes, a carb), a solid-roller cam with 0.714 inches of lift, 12:1 compression, and it requires 110 octane fuel. Here’s GM’s succinct English translation of those stats:
In 1969, when muscle cars were king, Chevrolet built a handful of Camaros and Chevelles specifically for drag racing in the NHRA Stock Eliminator class. Designated COPO, or Central Office Production Order, these specialty machines weren’t marketed to the general public.
GM crate engines can usually be ordered through your local GM dealership. You might see online retailers like JEGS or Crate Engine Depot offer these engines, but they’re almost always asking the same price as Chevrolet themselves. We’ve found the Gandrud Auto Group’s GM Performance Motor website is the best resource around. Please note, we are not responsible for large amounts of hours lost while browsing crate engines.
Another party trick of the 488 is its ability to run on compressed natural gas (CNG) or liquefied petroleum (LPG) in addition to regular pump gasoline. That’s thanks to the stainless valves and hardened valve seats. A forged crank, rods, pistons, full-length cooling jackets, and cast-iron head and block ensure maximum durability and longevity even in high-stress situations. Just add your choice of intake manifold, carb, and all the regular bolt-ons we talked about earlier, and you’re good to go.